Apache libcloud is a Python library that's used primarily to create, reboot & destroy machines in any supported cloud.

Mist.io is a cloud management platform that uses Apache libcloud under the hood. It provides a REST API & a Web UI that can be used for creating, rebooting & destroying machines, but also for tagging, monitoring, alerting, running scripts, orchestrating complex deployments, visualizing spending, configuring access policies, auditing & more.